
| Shiri Appleby | ... | Liz Parker (61 episodes, 1999-2002) |

| Jason Behr | ... | Max Evans / ... (61 episodes, 1999-2002) |

| Katherine Heigl | ... | Isabel Evans / ... (61 episodes, 1999-2002) |
 | Brendan Fehr | ... | Michael Guerin / ... (61 episodes, 1999-2002) |

| Majandra Delfino | ... | Maria DeLuca (60 episodes, 1999-2002) |
 | Nick Wechsler | ... | Kyle Valenti (60 episodes, 1999-2002) |

| William Sadler | ... | Sheriff Jim Valenti (58 episodes, 1999-2002) |

| Colin Hanks | ... | Alex Whitman (44 episodes, 1999-2001) |

| Emilie de Ravin | ... | Tess Harding / ... (28 episodes, 2000-2002) |
 | Mary Ellen Trainor | ... | Diane Evans (23 episodes, 1999-2002) |
 | John Doe | ... | Jeff Parker / ... (18 episodes, 1999-2002) |
 | Garrett M. Brown | ... | Phillip Evans (18 episodes, 2000-2002) |

| Adam Rodriguez | ... | Jesse Ramirez (17 episodes, 2001-2002) |
 | Jason Peck | ... | Deputy Hanson / ... (14 episodes, 1999-2002) |

| Diane Farr | ... | Amy DeLuca (11 episodes, 1999-2001) |

| Devon Gummersall | ... | Sean DeLuca (8 episodes, 2001) |

| Julie Benz | ... | Kathleen Topolsky (7 episodes, 1999-2000) |

| Desmond Askew | ... | Brody Davis (7 episodes, 2000-2001) |

| Jim Ortlieb | ... | Nasedo / ... (7 episodes, 2000) |
 | Steve Hytner | ... | Milton Ross (7 episodes, 1999-2000) |

| Michael Chieffo | ... | Mr. Seligman (7 episodes, 2000-2002) |

| Sara Downing | ... | Courtney Banks (6 episodes, 2000) |
 | Jo Anderson | ... | Nancy Parker (6 episodes, 1999-2001) |

| Nicole Brunner | ... | Jennifer Coleman / ... (6 episodes, 2001) |

| Jeremy Davidson | ... | Grant Sorenson (5 episodes, 2000-2001) |
 | David Conrad | ... | Daniel Pierce / ... (5 episodes, 2000) |
 | Joseph Williams | ... | Singer / ... (5 episodes, 2000-2002) |
 | Michael Horse | ... | Deputy Owen Blackwood (4 episodes, 1999) |

| Gretchen Egolf | ... | Vanessa Whitaker (4 episodes, 2000) |

| Allison Lange | ... | Laurie Dupree (4 episodes, 2001) |

| Daniel Hansen | ... | Young Max / ... (4 episodes, 1999-2000) |
 | Zoe K. Nutter | ... | Young Isabel / ... (4 episodes, 1999-2000) |
 | Richard Anthony Crenna | ... | Agent Baxter (4 episodes, 1999) |
 | Ned Romero | ... | River Dog (3 episodes, 1999-2000) |
 | Miko Hughes | ... | Nicholas Crawford (3 episodes, 2000) |

| Robert F. Lyons | ... | Hank Whitmore (3 episodes, 1999-2000) |
 | Yolanda Lloyd | ... | Ms. Hardy (3 episodes, 1999) |
 | Robert Katims | ... | Judge Lewis (3 episodes, 2000-2001) |
 | Nicolas Stratton | ... | Young Michael (3 episodes, 1999-2001) |

| Jacob Bruce | ... | Agent Samuels / ... (3 episodes, 2000) |

| Erica Gimpel | ... | FBI Agent Suzanne Duff (3 episodes, 2001) |

| Ted Rooney | ... | Mr. Whitman (3 episodes, 2000-2001) |

| Richard Schiff | ... | Agent Stevens (3 episodes, 1999) |

| Jonathan Frakes | ... | Himself / ... (3 episodes, 1999-2001) |

| Martin Starr | ... | Monk / ... (3 episodes, 2001-2002) |

| Kevin Cooney | ... | Dr. Malcolm Margolin (2 episodes, 2000) |

| Keith Szarabajka | ... | Dan Lubetkin (2 episodes, 2001) |

| Wendle Josepher | ... | Jennifer (2 episodes, 1999-2000) |
 | Woody Brown | ... | Major Carlson (2 episodes, 2002) |

| Tod Thawley | ... | Eddie (2 episodes, 1999) |
 | Winnie Holzman | ... | Madame Vivian (2 episodes, 2000-2002) |

| Dan Martin | ... | Principal (2 episodes, 1999-2000) |

| Kevin Weisman | ... | Lawrence 'Larry' Trilling (2 episodes, 1999-2000) |

| Robert Neary | ... | Moss (2 episodes, 1999) |
 | Stephen O'Mahoney | ... | Agent Morris / ... (2 episodes, 2000) |
 | Heidi Swedberg | ... | Meredith Dupree (2 episodes, 2001) |

| Jenny O'Hara | ... | Ida Crawford (2 episodes, 2000) |
 | Gunnar Clancey | ... | Agent Bello (2 episodes, 2000) |

| John Cullum | ... | James Valenti Sr. (2 episodes, 2000) |
 | Dennis Christopher | ... | Bobby Dupree (2 episodes, 2001) |

| Jeremy Guskin | ... | Derek (2 episodes, 2001) |

| Joe Camareno | ... | Paramedic (2 episodes, 1999) |
 | Fernando Negrette | ... | Hispanic Man (2 episodes, 2000) |
 | Alison Ward | ... | Deb (2 episodes, 2001) |
 | Ebonie Smith | ... | Genoveve (2 episodes, 1999) |
 | Channing Carson | ... | Liz at 7 Years / ... (2 episodes, 1999-2000) |
 | Zack Aaron | ... | Heavy Metal Kid (2 episodes, 1999) |
 | Rosana Potter | ... | Carmen (2 episodes, 2001) |

| Eve Brent | ... | Bess Covendall (2 episodes, 2001-2002) |

| Yorgo Constantine | ... | Agent Burns (2 episodes, 2001-2002) |

| Ashley Johnson | ... | Eileen Burrows (2 episodes, 2002) |

| Jason Winston George | ... | Agent Matheson (2 episodes, 2000) |

| Morgan Fairchild | ... | Meris Wheeler (2 episodes, 2002) |

| Jack Donner | ... | Clayton Wheeler (2 episodes, 2002) |

| Richard Dorton | ... | Agent Levin (2 episodes, 2000) |

| Clayne Crawford | ... | Billy Darden (2 episodes, 2001-2002) |
 | Dayton Callie | ... | Joey Ferrini (2 episodes, 2001) |

| Ivonne Coll | ... | Ms. Ramirez (2 episodes, 2001) |

| Spence Decker | ... | Kivar (2 episodes, 2001) |

| Joe Pantoliano | ... | Kal Langley (2 episodes, 2001) |

| Michael Peña | ... | Fly (2 episodes, 2001) |

| Earl Poitier | ... | George (2 episodes, 2001) |

| Steven Roy | ... | Steve (2 episodes, 2001) |
 | Meredith Scott Lynn | ... | Dominique Lazar (2 episodes, 2002) |
|
| Jason Katims | .... | executive producer (61 episodes, 1999-2002) |
| Ronald D. Moore | .... | co-executive producer (39 episodes, 2000-2002) |
| Lisa J. Olin | .... | executive producer (15 episodes, 1999-2002) |
| Kevin Kelly Brown | .... | executive producer (14 episodes, 1999-2002) |
| Jonathan Frakes | .... | executive producer (14 episodes, 1999-2001) |
| Tracey D'Arcy | .... | co-producer / producer (13 episodes, 1999-2002) |
| Carol Dunn Trussell | .... | supervising producer / producer / ... (12 episodes, 1999-2001) |
| Agatha Warren | .... | associate producer (10 episodes, 2001-2002) |
| Gretchen J. Berg | .... | co-producer / producer (9 episodes, 2000-2002) |
| Aaron Harberts | .... | co-producer / producer (9 episodes, 2000-2002) |
| Christopher Seitz | .... | co-producer / producer (9 episodes, 2000-2002) |
| Toni Graphia | .... | consulting producer (7 episodes, 2000-2001) |
| Thania St. John | .... | co-executive producer (4 episodes, 1999-2001) |
| David Nutter | .... | executive producer (4 episodes, 1999) |
| Fred Golan | .... | co-producer (4 episodes, 2000-2001) |
| John Heath | .... | producer (4 episodes, 2000-2001) |
| Jon Harmon Feldman | .... | consulting producer (3 episodes, 1999) |
| Barry Pullman | .... | producer (3 episodes, 1999) |
| Emily Whitesell | .... | co-producer (3 episodes, 1999) |
| Russel Friend | .... | co-producer (2 episodes, 2001) |
| Garrett Lerner | .... | co-producer (2 episodes, 2001) |
| David Simkins | .... | consulting producer (2 episodes, 2001) |
|
| Lisa Klink | .... | co-producer (unknown episodes, 2001) |
| |
|
| Robert Chinello | .... | best boy grip (39 episodes, 2000-2002) |
| Patrick Murray | .... | gaffer (39 episodes, 2000-2002) |
| Carl A. Vidnic | .... | electrician (39 episodes, 2000-2002) |
| Rick Maddux | .... | assistant chief lighting technician (34 episodes, 2000-2002) |
| Glen Holland | .... | lighting console programmer (30 episodes, 2000-2002) |
| Chris Lewis | .... | electrician (22 episodes, 1999-2000) |
| Alicia Brauns | .... | second assistant camera (10 episodes, 1999) |
| Sean P. Fickert | .... | rigging grip (5 episodes, 1999-2000) |
| James M. Sterba | .... | first assistant camera: "b" camera (3 episodes, 1999) |
| Kris Krosskove | .... | camera operator (2 episodes, 2001-2002) |
|
| Elizabeth Algieri | .... | camera loader (unknown episodes) |
| Pasquale Attanasio | .... | grip (unknown episodes) |
| Steve Gilbert | .... | dolly grip (unknown episodes) |
| Scott Graves | .... | best boy electric (unknown episodes) |
| Cullen Lockwood | .... | first assistant camera: second unit (unknown episodes) |
| Jody Miller | .... | Steadicam operator / second camera operator (unknown episodes) |
| Max Neal | .... | assistant camera (unknown episodes) |
| Morten Petersen | .... | set electrician (unknown episodes) |
| Jonathan Sharpe | .... | first assistant camera (unknown episodes) |
| Chris Trillo | .... | grip (unknown episodes) |
| Jaimie Trueblood | .... | still photographer (unknown episodes) |
| Troy White | .... | rigging gaffer (unknown episodes) |
| Gary A. Williams | .... | dolly grip (unknown episodes) |
| |